Feed-water regulator.



G .BRENT. FEED WATER REGULATOR.

APPLIOATION FILED JAN. 25, 1907.

939,889. Patented Nov. 9, 1909.

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FEED WATER REGULATOR. APPLICATION FILED JAN. 25, 1907.

Patented Nov. 9, 1909.

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CHARLES BRENT, F BRANDON, MANITOBA, CANADA.

FEED-WATER REGULATOR.

Specification of Letters Patent.

Patented Nov. 2, 1909.

Application filed January 25, 1907. Serial No. 354,007.

To all whom it may concern:

Be it known that 1, CHARLES BRENT, residing at Brandon, in the Provinceof Mani toba and Dominion of Canada, have invented a certain new anduseful Improvement in F eed-lVater Regulators, of which the following isa full, clear, and exact description, reference being had to theaccompanying drawings.

This invention relates to improvements in regulators for the feed waterof steam boilers and similar devices and is designed as an improvementover my prior application for feed water regulator for steam boilersfiled May 16, 1904 Serial No. 208,220. In this prior application aconstruction of feed water regulator is shown wherein a pump, operatedby steam from the boiler and supplying feed water to such boiler, iscontrolled by a valve which receives its operation from a weightedlever, which is held in a state of equilibrium by a ball which is inopen communication with the boiler at all times and is located at apoint with respect to the boiler such that the water level in the latteris maintained in said ball, and when the parts are in normal position,that is, when the water is at its proper level both in the boiler and inthe ball the latter is sufiicient to counterbalance the weight upon theopposite end of the lever and steam to the pump is shut-off, but uponthe sinking of the water in the boiler with a consequent sinking of thewater in the ball the valve to the pump is opened and steam is permittedto pass to the pump, operate the same and thereby deliver water to theboiler.

The present invention relates to the means by which steam is supplied tothe ball and also to the valve which is used for controlling the passageof steam to the feed water pump, whereby upon a slight movement of thevalve the pump is given a full head of steam and water is immediatelysupplied to the boiler.

The invention may be further briefly summarized as consisting in theconstruction and combination of parts hereinafter set forth in thefollowing description, drawings and claims.

Referring to the drawings Figure 1 shows my device applied to a boilerand feed water pump, Fig. 2 is a vertical longitudinal section throughthe valve casing; Fig. 3 is a section through the valve stem and the endof the valve casing, and Fig. i is a detail view of the face of thevalve.

My device may be used with any preferred form of boiler but I have shownone form in the drawings which is in accordance with the requirements ofmy invention and in such embodiment 1 represents a boiler provided witha steam pipe 2 leading to a pump 3, connected by a water pipe & to theboiler. The steam pipe 2 is provided with a valve casing 5 having a flatinternal wall 6 provided with radial disposed ports 7 and adapted toform a valve seat. These ports are in communication with the steam pipeat all times. The casing 5 is provided with a cylindrical portion 8,which forms a chamber in communication with the steam pipe from theboiler, and it is provided with a threaded cap 9 having a hollow portion10 for the reception of a valve stem 11. A stuffing box 12 is secured tothe boss 10 and prevents any leakage about the valve 7. The valve stem11 is provided with a longitudinal opening 13 which communicates withopening let in communication with the chamber within the cylindricalpart 8 whereby steam supplied to such chamber is free to pass outthrough said stem. The inner end of the stem 11 has a disk valve 15taking against the face of the wall 6 and having a port 16 adapted toregister with the port 7 in said wall. This valve 15 is provided with asocket 17 for receiving the end of the Valve stem 11 and a pin 18 isarranged through these parts to hold them together so that any rotationof the valve stem is conveyed to the valve itself. A coiled spring 19 ismounted between the cap 9 and the socket 1? for forcing the valve snuglyagainst its seat. The valve casing 5 is further provided with a portion20 opposite to the hollow portion 10 and the valve stem and having anopening 21 which is connected to a water pipe 22 leading to the boilerbelow the water line.

The operating mechanism for the valve 15 consists of a boss 28 threadedonto the end of the valve stem 11 and secured thereto by a check nut 24and another boss 25 mounted in the stuffing box 26 upon the portion 20of the valve casing, together with a yoked lever 27 secured in thebosses 23 and 25, and provided upon its end with a counter balanceweight 28. Secured in the boss 25 is a water pipe 29 leading to thelower part of a ball 80 connected at the top to a steam pipe 31 securedin the boss 23 and in open communication with the opening in the valvestem 11. The pipe 29 is in open communication with the portion 20 of thevalve casing whereby water supplied by the pipe 22, from the boiler,will pass into the ball 30. A petcock 32 is secured in the boss 23 forblowing off the steam line at this point.

It will be seen from the foregoing construction that when the device isset up the water level in the boiler will be maintained in the ball byreason of the water and steam supply thereto and when the water sinks inthe boiler it will also sink in the ball and will thereby decrease theweight thereof and the lever formed about the bosses 25 and 23, willshift the valve 15 and bring about the registration of the ports 7 and16, which up to this time have been out of alinement, and deliver steamto the pump, supplying feed water to the boiler. In this way the waterlevel in the boiler may be maintained at a fixed point.

Having described my invention, I claim:

1. In a feed water regulator, in combination, a boiler, a pump forsupplying water to said boiler, a steam line from said boiler to saidpump, a valve casing in said steam line, a valve within said casing, ahollow stem for said valve and having an opening communicating with thesteam space of said casing, a weighted lever carried by said valve stemand normally tending to open said valve, a reservoir on said lever forcounteracting the elfect of said weighted lever a pipe in communicationwith the opening in said valve stem for supplying steam to saidreservoir and a suitable connection between said reservoir and the waterspace in the boiler, said pipe and said last mentioned connectionserving to maintain a water level in the reservoir corresponding to thatin the boiler.

2. In a feed water regulator, in combination, a pump for supplying waterto said boiler, a steam line from said boiler to said eases pump, avalve casing in said steam line, a portion projecting from one side ofsaid valve casing and having a water supply opening therein, a valvewithin said casing, a hollow valve stem for said valve and projectingout of said casing in an opposite direction to said portion having thewater supply opening, the opening in said stem having communication withthe steam space in said valve casing, a weighted lever secured to saidvalve stem and pivotally mounted upon the water supply portionprojecting from said casing, a water pipe secured to said lever and inopen communication with the water supply opening, a receptacle alsomounted upon said lever and in communication with said water pipe andadapted to receive water therefrom, and a steam pipe connected to saidreceptacle and in open communication with said hollow valve stem.

3. In a feed water regulator, in combina tion, a boiler, means forsupplying water to said boiler, a steam line from the boiler to saidwater supply means, a valve casing in said steam line, a valve in saidcasing and having a plurality of ports, a valve seat in said casing alsohaving a plurality of ports adapted to be arranged normally out ofregistration with the ports of said valve when it is closed, a hollowstem for said valve passing out of the casing and having an openingcommunicating with the steam space thereof, means normally tending toshift said valve into an open position, a reservoir communicating withsaid hollow stem for counteracting the tendency of said valve shiftingmeans and adapted to be supplied with water and means whereby water andsteam may be supplied to said reservoir so that the water level in theboiler may be maintained in the reservoir.

In testimony whereof I affix my signature in the presence of twowitnesses.

CHARLES BRENT. Witnesses GEORGE H. DRAPER, MICHAEL J. GALVIN.

